Climate ▸Forecast ▸December ▸January ▸
JanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecember

Gilroy (CA) Weather and Climate: A Comprehensive Guide

The climate in Gilroy is marked by big temperature swings throughout the year. Temperatures range from very warm during the warmest months to mild in the cooler months. Gilroy has a dry climate with relatively low precipitation levels. Let’s explore the climate details in depth to provide you with a complete overview.

Average maximum day and minimum night temperature

In Gilroy, temperatures differ significantly between summer and winter months. On average, daytime temperatures range from a very warm 30°C in July to a moderate 16°C in December.

Nighttime temperatures can drop, with average lows reaching 4°C in December. Check out our detailed temperature page for more information.

Temperature ranges by month

Precipitation and rainy days

Gilroy tends toward drier weather patterns, receiving approximately 428 mm of rain per year. The seasons in Gilroy, bring significant changes in precipitation. The wettest month, December, receives moderate rainfall, with an average of 98 mm of precipitation. This rainfall is distributed across 10 rainy days.

In contrast, the driest month, July, experiences much less rainfall, totaling 0 mm over 0 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Gilroy Precipitation page.

The mean monthly precipitation over the year, including rain, hail and snow

Forecast for Gilroy (CA)

Thu   Dec 26
15°C | 7°C
SW 2 m/s
3.8 mm
broken clouds and  chance of slight rain

broken clouds and chance of slight rain

Fri   Dec 27
17°C | 10°C
SW 3 m/s
12 mm
broken clouds and rain

broken clouds and rain

Sat   Dec 28
18°C | 9°C
SW 3 m/s
broken clouds and no rain

broken clouds and no rain

The best time of year to visit Gilroy in the United States of America

During the months of March, April, May, October and November you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:
  • Does Gilroy have a dry season?
    Yes, the months of May, June, July, August and September are very dry.
  • Which is the warmest month in Gilroy?
    July has an average maximum temperature of 30°C and is the warmest month of the year.
  • Which is the coldest month in Gilroy?
    The coldest month is December with an average maximum temperature of 16°C.
  • Which is the wettest month in Gilroy?
    December tops the wettest month list with 98 mm of rainfall.
  • Which is the driest month in Gilroy?
    July is the driest month with 0 mm of precipitation.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.